IP Library › Granted Patent US 9,017,458
Granted Patent B2
US 9,017,458 · App. 13/709,456 · Granted Apr 28, 2015

Method of concurrently filtering particles and collecting gases

Inventors: Mark A. Mitchell (Dublin, CA); Annemarie Meike (Oakland, CA); Brian L. Anderson (Lodi, CA)
Assignee: Lawrence Livermore National Security, LLC
B01D46/0036B01D53/0431B01D2253/102B01D2257/708B01D2257/93
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Quick Facts
Patent No.
US 9,017,458
App. No.
13/709,456
Granted
Apr 28, 2015
Kind
B2
Abstract

A system for concurrently filtering particles and collecting gases. Materials are be added (e.g., via coating the ceramic substrate, use of loose powder(s), or other means) to a HEPA filter (ceramic, metal, or otherwise) to collect gases (e.g., radioactive gases such as iodine). The gases could be radioactive, hazardous, or valuable gases.

Claims (47)

1. A filter apparatus for concurrently removing particles from a fluid and removing gases from the fluid, comprising:

a filter unit body housing, said filter unit body housing forming an enclosure;

at least one opening in said filter unit body housing;

at least one tubular filter element positioned in said enclosure of said filter unit body housing,

said at least one tubular filter element having a tubular side, an internal passage, a closed top, and an open bottom wherein said open bottom is positioned over said at least one opening in said filter unit body housing;

a filter material associated with said tubular side of said at least one filter element that removes the particles from the fluid, when the fluid passes through said filter material; and

a gas removing material in said enclosure of said filter unit body housing that removes the gases from the fluid as the fluid passes through said enclosure.

2. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 wherein said filter material is a filter material that includes nanofibers.

3. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 wherein said filter material is a filter material that removes radiological aerosol particles.

4. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 wherein said filter material is a filter material that removes biological aerosol particles from the fluid.

5. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 wherein said gas removing material that removes the gases from the fluid includes natural enzymes.

6. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 wherein said gas removing material that removes the gases from the fluid includes zeolites.

7. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 wherein said gas removing material that removes the gases from the fluid includes synthetic molecules that capture or collect the gases.

8. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 further comprising an access unit for providing access to said enclosure of said filter unit body housing.

9. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 further comprising a system for removing the gases from said gas removing material that removes the gases from the fluid.

10. The filter apparatus for concurrently removing particles and gases from a fluid of claim 1 further comprising a system for cleaning said filter material associated with said tubular side of said at least one element that removes the particles from the fluid.

11. A filter apparatus for concurrently removing particles from a fluid and removing gases from the fluid, comprising:

a filter unit body housing, said filter unit body housing forming an enclosure;

a first opening in said filter unit body housing;

a second opening in said filter unit body housing;

a first tubular filter element positioned in said enclosure of said filter unit body housing, said first tubular filter element having a first tubular side, a first internal passage, a first closed top, and a first open bottom wherein said first open bottom is positioned over said first opening in said filter unit body housing;

a second tubular filter element positioned in said enclosure of said filter unit body housing, said second tubular filter element having a second tubular side, a second internal passage, a second closed top, and a second open bottom wherein said second open bottom is positioned over said second opening in said filter unit body housing;

additional tubular filter elements positioned in said enclosure of said filter unit body housing, said additional tubular filter elements having additional tubular sides, additional internal passages, additional closed tops, and additional open bottoms wherein said additional open bottoms are positioned over said additional openings in said filter unit body housing;

a first filter material associated with said first tubular side of said first tubular filter element that removes the particles from the fluid; when the fluid passes through said first filter material;

a second filter material associated with said second tubular side of said second tubular filter element that removes the particles from the fluid when the fluid passes through said second filter material;

additional filter materials associated with said additional tubular sides of said additional tubular filter elements that remove the particles from the fluid when the fluid passes through said additional filter materials; and

a gas removing material in said enclosure of said filter unit body housing that removes the gases from the fluid as the fluid passes through said enclosure.

12. The filter apparatus for concurrently removing particles and gases from a fluid of claim 11 wherein said filter material is a filter element that includes nanofibers.

13. The filter apparatus for concurrently removing particles and gases from a fluid of claim 11 wherein said gas removing material that removes the gases from the fluid includes natural enzymes.

14. The filter apparatus for concurrently removing particles and gases from a fluid of claim 11 wherein said gas removing material that removes the gases from the fluid includes zeolites.

15. The filter apparatus for concurrently removing particles and gases from a fluid of claim 11 wherein said gas removing material that removes the gases from the fluid includes synthetic molecules that capture or collect the gases.

16. The filter apparatus for concurrently removing particles and gases from a fluid of claim 11 further comprising an access unit for providing access to said enclosure of said filter unit body housing.

17. The filter apparatus for concurrently removing particles and gases from a fluid of claim 11 further comprising a system for removing the gases from said gas removing material that removes the gases from the fluid.

18. The filter apparatus for concurrently removing particles and gases from a fluid of claim 11 further comprising a system for cleaning said filter material that removes the particles from the fluid.

19. A method of concurrently filtering particles and removing gases from a fluid, comprising the steps of:

providing a filter unit body housing that forms an enclosure with at least one opening in said filter unit body housing;

providing at least one tubular filter element in said enclosure of said filter unit body housing, wherein said a least one tubular filter element has a tubular side, an internal passage, a closed top, and an open bottom wherein said open bottom is positioned over said at least one opening in said filter unit body housing;

providing a filter material associated with said tubular side of said at least one filter element; and

providing a gas removing material in said enclosure of said filter unit body housing;

directing the fluid through said at least one filter element and said filter material thereby removing the particles from the fluid, and

directing the fluid to said gas removing material in said enclosure of said filter unit body housing thereby removing the gases from the fluid.

20. The method of concurrently filtering particles and removing gases from a fluid of claim 19 wherein said step of directing the fluid through said at least one filter element and said filter material thereby removing the particles from the fluid comprises directing the fluid through a filter material that includes nanofibers.

21. The method of concurrently filtering particles and removing gases from a fluid of claim 19 wherein said step of directing the fluid through said gas removing material includes directing the fluid through zeolites.

22. The method of concurrently filtering particles and removing gases from a fluid of claim 19 wherein said step of directing the fluid through said gas removing material includes directing the fluid through natural enzymes.

23. The method of concurrently filtering particles and removing gases from a fluid of claim 19 wherein said step of directing the fluid through said gas removing material includes directing the fluid through natural synthetic molecules that capture or collect the gases.

24. The method of concurrently filtering particles and removing gases from a fluid of claim 19 further comprising the step of removing the gases from said gas removing material that removes the gases from the fluid.

25. The method of concurrently filtering particles and removing gases from a fluid of claim 19 further comprising the step of cleaning said filter material.

Assignments (2)
CONFIRMATORY LICENSE Recorded Feb 19, 2013
From: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 029826/0471 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 28, 2013
From: MITCHELL, MARK A.; MEIKE, ANNEMARIE; ANDERSON, BRIAN L.
To: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
Reel/Frame 029706/0292 →
Continuity (1)
Related Publication 20140162346A1 · Jun 12, 2014